74186969 has 2 divisors, whose sum is σ = 74186970. Its totient is φ = 74186968.

The previous prime is 74186921. The next prime is 74186989. The reversal of 74186969 is 96968147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64963600 + 9223369 = 8060^2 + 3037^2 .

It is a cyclic number.

It is not a de Polignac number, because 74186969 - 2⁸ = 74186713 is a prime.

It is a super-2 number, since 2×74186969² = 11007412738813922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74186989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37093484 + 37093485.

It is an arithmetic number, because the mean of its divisors is an integer number (37093485).

Almost surely, 2^74186969 is an apocalyptic number.

It is an amenable number.

74186969 is a deficient number, since it is larger than the sum of its proper divisors (1).

74186969 is an equidigital number, since it uses as much as digits as its factorization.

74186969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 74186969 is about 8613.1857636997. The cubic root of 74186969 is about 420.1869330387.

The spelling of 74186969 in words is "seventy-four million, one hundred eighty-six thousand, nine hundred sixty-nine".